Pop star Jessica Simpson is launching a line of denims to help girls' butts look good.

"As I live in denim, I feel that the fit is the most important aspect of any pair of jeans. A girl's booty needs to look good in it," femalefirst.co.uk quoted her as saying.

"I was inspired to create a denim line that it is so comfortable and fitted that it becomes a girl's best friend," Jessica added.